.w {
    width: 80%;
    max-width: 1365px;
    margin:  0 auto;
}
.ww {
    width: 80%;
    max-width: 1000px;
    margin:  0 auto;
}
.www {
    width: 60%;
    max-width: 800px;
    margin:  0 auto;
}
.warpBox {
    min-height: 100vh;
    background-repeat: repeat-y;
    background-size: 100%;
    background-image: url(../images/img/about_bg.png);
    padding-bottom: 9.2857rem;
}
.content_1 {
    padding-top: 4rem;
    font-size: 19px;
    line-height: 48px;
    color: #212121;
}
.content_1 .txt-1 {
    font-size: 30px;
    line-height: 4rem;
}
.content_2 {
    padding-top: 5rem;
}
.content_2 .txt {
    margin-bottom: 20px;
}
.content_2 .item {
    padding-top: 25px;
    text-indent: 2em;
    font-size: 14px;
    line-height: 24px;
}
.content_2 img {
    width: 100%;
    display: block;
}